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authorStephen Boyd <sboyd@codeaurora.org>2016-01-06 17:12:47 -0800
committerLinus Walleij <linus.walleij@linaro.org>2016-01-07 10:33:41 +0100
commit4b83555d5098e73cf2c5ca7f86c17ca0ba3b968e (patch)
treee162161d9ce05226ac09caffea6ad1e3308d3759 /drivers/base
parentc9f294ff6584782d20b4a766901a9cff7398bb20 (diff)
downloadlinux-4b83555d5098e73cf2c5ca7f86c17ca0ba3b968e.tar.bz2
driver-core: platform: Add platform_irq_count()
A recent patch added calls to of_irq_count() in the qcom pinctrl drivers and that caused module build failures because of_irq_count() is not an exported symbol. We shouldn't export of_irq_count() to modules because it's an internal OF API that shouldn't be used by drivers. Platform drivers should use platform device APIs instead. Therefore, add a platform_irq_count() API that mirrors the of_irq_count() API so that platform drivers can stay DT agnostic. Cc: Andy Gross <andy.gross@linaro.org> Acked-by: Rob Herring <robh@kernel.org> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/base')
-rw-r--r--drivers/base/platform.c20
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index 1dd6d3bf1098..73e399466c6e 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -117,6 +117,26 @@ int platform_get_irq(struct platform_device *dev, unsigned int num)
EXPORT_SYMBOL_GPL(platform_get_irq);
/**
+ * platform_irq_count - Count the number of IRQs a platform device uses
+ * @dev: platform device
+ *
+ * Return: Number of IRQs a platform device uses or EPROBE_DEFER
+ */
+int platform_irq_count(struct platform_device *dev)
+{
+ int ret, nr = 0;
+
+ while ((ret = platform_get_irq(dev, nr)) >= 0)
+ nr++;
+
+ if (ret == -EPROBE_DEFER)
+ return ret;
+
+ return nr;
+}
+EXPORT_SYMBOL_GPL(platform_irq_count);
+
+/**
* platform_get_resource_byname - get a resource for a device by name
* @dev: platform device
* @type: resource type